Re: startup process stuck in recovery

Christophe Pettus <xof(at)thebuild(dot)com> writes:
>> On Oct 9, 2017, at 13:01, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Is that number changing at all?

> Increasing:
> AccessExclusiveLock | 8810

Oh, that's really interesting. So it's not *just* releasing locks but
also acquiring them, which says that it is making progress of some sort.

My bet is that the source server did something that's provoking O(N^2)
behavior in the standby server's lock management. It's hard to say
exactly what, but I'm wondering about something like a plpgsql function
taking an AccessExclusiveLock inside a loop that repeatedly traps an
exception. Can you correlate where the standby is stuck with what
was happening on the source?

regards, tom lane